First, as you've pretty well guessed by now, I'm a big fan of the .40 and .45 for personal defense, and for the same reasons. They're both big, slow-moving bullets. Of the two, I think big is more important. As I've said before, I want something that will plow through bone and keep going, not skip off of it. I can't tell you how many times I've seen a .380 or 9mm strike bone on a well-placed shot and skip off in a non-vital direction, leaving the BG free to return fire. With the .40 and .45, this seldom happens.
Bone is in the body for basically two reasons--to give support as with the legs and spinal column and to protect major organs, such as the ribs protecting the heart or the skull protecting the brain. Skip a bullet off a support bone, such as the leg, and the BG will keep shooting. Break it, like you generally do with a .40 or .45, and the BG is going to hit the pavement and your chances of survival increase dramatically. It's the same with a shot to the chest. Skip a 9mm off the sternum (breastbone) and the fight continues; plow through the sternum with a .45 and, trust me, the fight is over. I'm just convinced that all things being equal, bigger is better when it comes to bullet size.
I also like bullets to expend all their energy in the body, not only for the protection of nearby civilians, but because I think it imparts more damage. I'm a bit less certain of this one, however, than I am about bullet size. Whether a bullet remains in the body is often as much a result of WHERE in the body it hit as what it was hit with. If hit solely in tissue, more often than not the bullet exits the body, regardless of what caliber it was; bone, on the other hand, can slow the bullet dramatically and leave it lodged in the body. As I said before, I once saw a .44 Magnum enter the skull point blank between the eyes and flatten and not exit on the inside of the skull on the back of the head. Amazing!
As for the .357 being a well-documented man-stopper, I'm guessing that you guys are right in assuming that it's mainly a function of velocity, but if someone wants to disagree I'll have no issue with it because it's a caliber we almost NEVER see anymore. When I was a cop in Atlanta it was the caliber of choice for law enforcement.
Unfortunately, I only rarely got to see autopsies back then so I can't speak from vast experience. With the increasing use of semi-autos, the prevalence of revolver rounds such as the .38 and .357 has dropped dramatically, and although we still see the .38 with some frequency, we almost never get to see the .357 at autopsy. Still, in its most lethal form, it's a 125-grain bullet, the same as a 9mm in many cases, and the 9mm has a horrible reputation as a reliable man-stopper. Again, I'm only guessing that it's a function of the higher velocity of the .357. The .41 Magnum, for all its hype about being the next great law enforcement caliber, never came into widespread use and I can't remember ever digging one out at autopsy, so I'll leave this one alone. And almost without exception, the bullet weight I see most often with the .44 is the commercially-available 240 grains so I can't speak to anything besides that.
Remember, folks, that what I see on the autopsy table is most often BGs shooting BGs (sniff, sniff. Forgive me, my eyes are welling up with tears and I might have to continue this thread later. Ok, better now, so I'll continue) or, worse, BGs shooting good guys. In either case, BGs usually aren't students of ballistics, they aren't NRA members, they don't read Guns and Ammo, and they don't sit down at the Dillon 550 at night cranking out some new handload they've read about. They buy commercially-available ammo and, occasionally, add some personal touches they've read about in the latest issue of Gangbanger Magazine, such as filling the cavity of the hollowpoint with mercury (Yes, I've seen it. Worked just like hardball) or deeply scoring the nose of the bullet (worked just like frangible except that it came apart on the outside of the other BGs clothing, which is why we had this one on the autopsy table (sniff). That said, if we want to evaluate various bullet weights and designs that aren't available commercially, we're once again left with ballistic gelatin, and the more I see on the autopsy table, the less confidence I have in the results.
Finally, just a couple of answers to questions: First, Houston is mostly right in assuming that multiple rounds seen from the 9mm and .380 are from the higher magazine capacity and controllability of the two calibers. Again, however, much of it is due to the fact that these two calibers just aren't getting the job done before the other BG returns fire and sends our BG to gangbanger heaven. Yes, the shots were eventually lethal, but many times not immediately so.
And, yes, they CAN BE an effective weapon IF placed in a lethal area and IF the bullet gets the job done once it gets there instead of skipping off in a non-lethal direction. My advice, however, is to get a larger caliber such as a .40 or .45, practice until you're comfortable with it, and use it as your carry gun, not the 9mm or .380. Practice will greatly reduce the first IF mentioned above, and a larger caliber will greatly reduce the other.
As always, take what you can use, and if your opinion differs... well, that's what opinions are all about, isn't it? My guess is that this will generate other questions, such as which bullet I like and other questions about caliber, etc. If so, let me know and I'll try to get to them as soon as I can.
